The powerful alcoholic and clumsy John Hancock is the most hated person in Los Angeles, as in spite of saving lives, he also destroys properties causing high cost to the city to fix his damages. When he saves the life of the PR Ray Embrey from a train, the executive feels in debt with Hancock and decides to change his image. He brings the anti-hero to have dinner at his home, and introduces him to his son and fan Aaron and to his wife, Mary. But Mary does not want Hancock in her life.